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Old 10-12-2011, 01:13 AM   #16
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Originally Posted by wingracer View Post
Castor definitely helps, especially with low castor fuels like the OD speed blend and 9% Byrons.
Spot on.

We were using a synthetic only based fuel for a while , lunched probably 1/2 dozen engines is exactly the same way until we figured out what was going on.

Add castor FTW
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Old 10-12-2011, 01:54 AM   #17
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Spot on.

We were using a synthetic only based fuel for a while , lunched probably 1/2 dozen engines is exactly the same way until we figured out what was going on.

Add castor FTW
1/2 dozen engines?expensive lesson!how much FTW did you add ?
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Old 10-12-2011, 02:19 AM   #18
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1/2 dozen engines?expensive lesson!how much FTW did you add ?
Yep , call it blind loyalty

We switched fuel and have never had an issue - 5% caster / 5% synth
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Old 10-12-2011, 04:57 AM   #19
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It's the fuel, more specifically the oil, or lack of. I damaged my Kangaroo the same way using OD Speedblend. I have allowed adequate running in (1 gallon) but the piston seized several times during runs when I was trying to race tune the engine.

Speedblend contains 7.5% oil. Too little for on-road. I have since switched to Cosmo (12-14% oil).
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